Day 4 at the Aus Open. Kei Nishikori and Naomi Osaka triumph, the new tie-breaker rule explained, we meet the player drivers, and learn what it takes to be a chair umpire. 

Day 4 at the Aus Open. Kei Nishikori and Naomi Osaka triumph, the new tie-breaker rule explained, we meet the player drivers, and learn what it takes to be a chair umpire.&nbsp;

Stay up to date with the Australian Open in less than 30 minutes a day! And follow the tours through the year, with coverage of all the majors and the Laver Cup.

Stay up to date with the Australian Open in less than 30 minutes a day! And follow the tours through the year, with coverage of all the majors and the Laver Cup.

The AO Show

The AO Show is the podcast for tennis fans in a hurry, with half-hour episodes every week! During the Australian Open, catch up on all the biggest stories every day of the main draw. Throughout the year, stay up to date with the latest tennis news and views every week.

The AO Show is the podcast for tennis fans in a hurry, with half-hour episodes every week! During the Australian Open, catch up on all the biggest stories every day of the main draw. Throughout the year, stay up to date with the latest tennis news and views every week.

Day 4 at the Aus Open: Nishikori and Osaka triumph, the new tie-breaker rule explained, we meet the player drivers, and learn what it takes to be a chair umpire.

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